xref: /openbmc/u-boot/board/amlogic/p212/p212.c (revision d66ff4ba)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2016 BayLibre, SAS
4  * Author: Neil Armstrong <narmstrong@baylibre.com>
5  */
6 
7 #include <common.h>
8 #include <dm.h>
9 #include <environment.h>
10 #include <asm/io.h>
11 #include <asm/arch/gx.h>
12 #include <asm/arch/sm.h>
13 #include <asm/arch/eth.h>
14 #include <asm/arch/mem.h>
15 
16 #define EFUSE_SN_OFFSET		20
17 #define EFUSE_SN_SIZE		16
18 #define EFUSE_MAC_OFFSET	52
19 #define EFUSE_MAC_SIZE		6
20 
21 int misc_init_r(void)
22 {
23 	u8 mac_addr[EFUSE_MAC_SIZE];
24 	char serial[EFUSE_SN_SIZE];
25 	ssize_t len;
26 
27 	meson_eth_init(PHY_INTERFACE_MODE_RMII,
28 		       MESON_USE_INTERNAL_RMII_PHY);
29 
30 	if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
31 		len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
32 					  mac_addr, EFUSE_MAC_SIZE);
33 		if (len == EFUSE_MAC_SIZE && is_valid_ethaddr(mac_addr))
34 			eth_env_set_enetaddr("ethaddr", mac_addr);
35 	}
36 
37 	if (!env_get("serial#")) {
38 		len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial,
39 			EFUSE_SN_SIZE);
40 		if (len == EFUSE_SN_SIZE)
41 			env_set("serial#", serial);
42 	}
43 
44 	return 0;
45 }
46